Portable cable fuse cut-out



Aug. 11, 1931. H. P. HASTINGS 1,818,251

PORTABLE CABLE FUSE CUT-OUT Filed Oct. 21. 1929 Patented Aug. 11, 1931UNITED STATES PATENT OFFICE HAROLD P. HASTINGS, OF SYRACUSE, NEW YORK,ASSIGNOR TO CROUSE-HINDS COM- PANY, OF SYRACUSE, NEW YORK, A CORPORATIONOF NEW YORK PORTABLE CABLE FUSE CUT-OUT Application filed October 21,1929. Serial No. 401,308.

This invention has for its object, a particularly simple and efficientmeans by which fuses are located in the wires of portable cables and thefuses and wires relieved of pulling force applied to the cable, or hasfor its object a particularly simple and efficient, what for brevityssake is called, a portable cable fuse cut out intended to be used in theelectric cable leading to portable electric tools,

not only to protect the tools but also avoid blowing out of the fuses inthe service wires of a building, so that if, during the use of the tool,because of conditions encountered by the tool, as when the tool stalls,the readily accessible fuse located in the portable cable will blow outinstead of the main fuse located somewhere in the electric servicesystem of the building.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingerawings, in which like characters designate corresponding parts in allthe views.

Figure l is a perspective view of this portable cable fuse cut out, thesections of the housing or box being shown as separated.

Figure 2 is an elevation, partly in section, of the portable fuse outout assembled on the portable cable sections.

This portable fuse cut out comprises, generally, two separable boxsections of any suitable insulating matcrial, the sections having arecess for receiving a fuse, connectable to the ends of a cut wireprojecting from the ends of the two separated sections of an electriccable and also a recess for a wire or wires that extend intact from onesection to the other, the box sections having means for interlockingwith the cable sections whereby the wires and the fuse are relieved ofthe pulling force applied to the cable, and means for se curing the boxsections together.

1 designates the sections of a cable and 2 and 3 stripped wires of thecable sections between said sections, the wires 8 being out forconnection to a fuse and the wires 2 being intact. These may be one,two, or more sep arate wires passing through the box intact.

f and 5 designate the separable sections of a box, these sections beingformed with complemental recesses 6 and 7 for receiving the fuses 8 andwires 8 and also with complemental grooves or recesses 9 for receivingwires 2.

As in the illustrated embodiment of my invention, a four wire system isshown in which two fuses 8 are used. There are two pairs of complementalrecesses 6 and 7, one pair for each fuse. The fuse shown is a cartridgefuse and is engaged by sockets 8 connected to the ends of the wire 3,the sockets being here shown as provided with binding devices includingscrews 10.

The box sections 4, 5 are provided with holes 11 for receiving the endsof the screws. The box sections are duplicates and hence the holes 11are provided in both sections, al-

though they need be provided only in one section. Obviously, byproviding these holes in both sections, the wire man does not have toexercise any judgment in locating the screws 10. The box sections 4 and5 are held assembled by fastening means as screws 12 threading into theholes 18 provided in the sections.

The means by which the wires 2, 3 and fuses 8 are relieved of tension orpulling force applied to the cable sections 1, 2 is here shown ascomprising collars l4, clamped on the ends of the cable sections andrecesses 15 formed in the box sections 4, 5 for receiving collars.

The box sections are also formed with cut outs in their end walls forembracing the cable sections.

In operation, the outer insulation of the cable is cut and stripped offthe wires to expose them so that a fuse can be inserted in I one or moreof them, one or more wires as 3 cut, the sockets 9 attached to the endsthereof and the fuses placed in the sockets. The collars 14; are clampedon the ends of the cable sections. The box sections are then appliedwith the fuses lying in the recesses 6, 7 and the wires 2 in the grooves9.

hen, during the use of the portable tool, an overhead current occurs,the fuse 8 in the cable burns out without affecting any other electricalappliances connected in the service system. Obviously. a burned out fusecan be readily replaced by merely separating the box sections, takingout the burnt fuse, installing a new fuse, and again securing the boxsections together.

What I claim is:

l. A fuse cut out for a cable having a plurality of wires, said out outcomprising acasing termed ott complemental sections, each of saidsections having a recess extending longitudinally and central of thesection and being open at both ends for receiving a continuous run ofthe wire of the cable, asecond recess extending parallel and to one sideof the first recess and being closed at its ends for receiving a fuseelement for connection to another wire oi the cable, a transv recadjacent each nd of the section 'ior receiving a cable clamp and meansfor detachably holding the sections together.

E2. The combination with sections of an electric cable .il a between ns,one 0 mg cut and separated and an ther extending intact troni one see tothe other, and a fuse connecting the wire ends, of a "fuse cut- ")l'l?separable box sections havfor receiving the said wires and id means forhoidi? g the box sectionsv te t e box sections and the cable sectionsbath means 'or interlocking to relieve the wires and i in the box ompulling force applied to the cable sections.

3. The combination with sections of an electric cable and wiresextending between the sections, one of the wires being cut and its endsseparated and another extending intact from one section to the other,and. a fuse connecting the wire ends, of a fuse cut out comprisingseparable box sections having recesses for receiving the said wires andthe fuse and means for holding the box sections together and collarsclamped on the ends of the cable sections, the box sections havingrecesses for rec lving and interlocking with the collars.

Jr. The combination with sections of an electric cable having strippedwires extending between the sections, one of the wires being cut and itsends separated and another wire extending intact "from one section tothe other, of sockets mounted on the separated ends of the wire andhaving screws for securing them to the ends of the wire, a cartridgefuse having its ends located in said sockets, box sections havingrecesses for receiving said wires, sockets and cartridge fuse, andadditional recesses for receving the ends Oil the screws, and means forsecuring the box sections together.

5. The combination with sections of an electric cable having strippedwires extending between the sections, one of the wires the fuse beingcut and its ends separated and another wire extending intact from onesection to the other, of sockets mounted on the separated wire ends andhaving screws for securing them to the wire ends, a cartridge fusehaving its ends located in said sockets, box sections having recessesfor receiving said wires, sockets and cartridge fuse, and additionalrecesses for receiving the ends of the screws, the cable sections andthe box sections having means for interlocking for relieving the wiresof pulling force applied to the cable sections, and means for securingthe box sections together.

6. The combination with sections of an electric cable having strippedwires extending between the sections, one of the wires being cut and itsends separated and another wire extending intact from one section to theother, of sockets mounted on the sepsated wire ends and having screwsfor securing them to the wire ends, a cartridge -fuse having its endslocated in said sockets. box sections having recesses for receiving saidwires, sockets and cartridge fuse, and additional recesses for receivingthe ends of the screws and collars secured on the cable sections, thebox sections having recesses at their ends for receiving andinterlocking with the collars and means for securing the box sectionstogether.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county ot Onondaga and State of New York, this 11th day of October,1929.

HAROLD P. HASTINGS.

